NGK 2641 Spark Plug

Reliable Ignition Performance for Ferrari Vehicles

The NGK Standard Spark Plug 2641 is engineered to deliver consistent ignition performance for select Ferrari models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Resistance: 5000 ohms for optimal electrical performance
• Ground Electrode Tip and Configuration: Standard design with nickel core
• Center Electrode: Copper core with nickel tip for durability
• Pre-Gap Size: .036 inches for precise spark gap
• Thread Diameter: 12.00 mm with a reach of .75 inches
• Hex Size: 5/8 inch for easy installation
• Insulator Height: 50.00 mm with flat seat type
• Electrical Terminal: Non-removable nut for secure connection
• Manufacturer Heat Range: 9, suitable for high-performance engines

About the NGK Standard Spark Plug Line

The Standard Spark Plug line by NGK offers reliable ignition components designed to meet OEM specifications. This line focuses on delivering consistent performance and durability using quality materials such as copper and nickel. The 2641 spark plug is part of this line, providing a balance of longevity and efficient combustion for Ferrari engines.

Technical Details and Compatibility

The NGK 2641 spark plug features a single ground electrode with a nickel core and a copper core center electrode tipped with nickel, ensuring stable spark delivery and resistance to electrode wear. Its 5000 ohm resistance helps reduce electrical noise and interference. The flat seat and 12 mm thread diameter with a .75 inch reach make it compatible with various Ferrari models including the 456 GT, 456 GTA, 456 M, 456 M GT, 456 M GTA, 512 M, 512 TR, 550 Maranello, 575 M Maranello, 612 Scaglietti, and Superamerica.

Common Applications and Problem Solving

• Restores proper ignition timing and spark delivery
• Reduces misfires and rough idling in Ferrari 456 and 550 Maranello models
• Improves fuel efficiency by ensuring complete combustion
• Prevents electrode wear and corrosion with nickel and copper materials
• Maintains engine performance in high-heat conditions with heat range 9

Installation Notes and Tips

• Verify correct gap of .036 inches before installation
• Use a 5/8 inch socket for proper torque application
• Ensure the spark plug is seated flat to prevent compression leaks
• Do not overtighten to avoid thread damage in cylinder head
• Check compatibility with specific Ferrari model year and engine variant

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable ignition performance. The Standard Spark Plug 2641 undergoes rigorous testing for durability and electrical resistance. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support long-term use in Ferrari vehicles.